Pulaski leeds



(No Model.)

PU LEEDS.

BALANCE SLIDE VALVE.

Patented Aprpfi, 1886.

Nwt

INVEN 0/? QM By a (A WITNESSES:

ATTOR/VEU Photo-Lithographer, Wahln wn. D. c.

nrnnr tries,

PULASKI LEEDS, OF LOUISVILLE, KENTUCKY, ASSIGNOR TO THE RAILWAY SPEED RECORDER-COMPANY, OF KENT, OHIO.

BALANCE SLI DE-VALVE.

SPECIFICATION forming part of Letters Patent N0. 339,438, dated April 6, 1886.

Application filed December 26, 1895. Selifll No. 196,740. (No modei.)

T all whom it 1-way concern: ing-ring c. The upper face of the ring B is Be it known that I, PULASKI. Lnnns, of broadened, having an internal flange, b, that Louisville, in the countyot'Jeffersou and State extends more or less on the rim a, and an exof Kentucky, have invented certain new and ternal flange or projection,b, the latter having useful Improvementsin BalanceSlide-Valves; suflicieut area to insure the ring being held by and I do hereby declare the following to be a the pressure of steam with sulhcient force full, clear, and exact description of the invenagainst the seat (I of the steam-chest cover D. tion, such as will enable others skilled in the Springs E are usually employed to hold the art to which it pertains to make and use the ring B against the seat (I 'whensteam is shut to same. off. An opening, a. is had from the chamber My invention relates to improvements in B, inside the ring B, to the exhaust A of the balance slidevalves in which the wearing-face valve. of the halanoering has aseries o't' perforations The operation of the balance-valve is fully (instead of the grooves heretofore employed) described in the aforesaid Letters Patent to 15 for equalizing the wear of said ring. Miller. It is found that the ring B rotates do My invention is designed as aniniproverneut more or less, and consequently the outer side on balance-valves for which United States Letof the face thereof abutting the seat cl, having ters Patent were granted to James B. Miller, further to travel, wears faster than the inner July 24, 1883, No. 281,907. portion of the face. 20 In the accompanying drawings, Figure l is In place of the annular groove described in a side elevation, in section, of a balance slidethe aforesaid Letters Patent for equalizing the valve embodying my invention. Fig. 2 is an Wear, I provide a series of holes, i, made end elevation, in section, of one half of the through the flange b. These holes cut away Valve. Fig. 3 is a bottom plan ofthe rubhingso much ofthe metal and so reduce the wearing 2 5 surface of the steam-chest cover. Fig. 4 is a surface at this part of the balancering that a section of the balanceringtnken through the tight joint between the outer portion of the center thereof. Fig. 5 is a plan of the balface thereof and the seat (I is always insured. mice-ring. These holes are cheaper to make, and I find A represents a slide-valve of modern but give better resu1ts,than the aforesaid annular o well-known construction with which I have grooves described in the Miller patent. chosen to illustrate my improvements, al- \Vhat I claim isthough my improvements may be applied to In a balance slide-valve, a balance-ring arany balance slide-valve. The valve has one ranged to slide on the valve-chest cover or on or more upwardlyprojecting annular rims, a, a seat connected to said cover and provided integral with the valve,or made separate and with a flange, the latter having continuous sebolt-ed or otherwise secured to the valve, as ries of holes through the same, substantially may be preferred. For narrow valves, one as set forth. such rim is sufficient; but for broad valves In testimony whereof I sign this specificasuch, for instance, as are usually employed on tion,in the presence of two witnesses, this 11th 0 locomotive-engines,andillnstratedinthe drawday of December, 1885.

ings-two such rims may be provided. PULASKI LEEDS.

B is the balance-ring, that is fitted nicely around the rim a, so that the ring may move W'itnesses: easily, and a steam-tight joint between the JOHN L. BANIOKMAX, 5 rim and ring is secured by means of the pack- XV. J. MARTIN. 

